have someone's number

idiom
Updated on: 15 Nov 2017

Definition of have someone's number

informal
: to be able to deal with or defeat someone easily especially because one knows or understands that person so well
  • She thinks she's got my number, but I'm going to prove her wrong.

Word by Word Definitions

someone play
  1. : some person : somebody

number play
  1. : a sum of units : total

  2. : complement

  3. : an indefinite usually large total

  1. : count, enumerate

  2. : to claim as part of a total : include

  3. : to restrict to a definite number


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